A 30 10² Kg Black Bear Hibernates in the Winter $\degree$

question 185

Multiple Choice

A 3.0 . 10² kg black bear hibernates in the winter.During hibernation, the bear's body temperature drops from 37.0 to 31.0 $\degree$ C.About how many grams of glucose must the bear metabolize to restore its body temperature to normal? Assume the bear's body is mostly water with a specific heat capacity of 4.18 J/(g . $\degree$ C) and that all the energy from the combustion of glucose is used to raise the bear's body temperature.(Glucose: $\Delta$ H_comb =-2808 kJ/mol, molar mass = 180 g/mol)
C₆ H₁₂ O₆ (g) + 6O₂ (g) $\rightarrow$ 6 CO₂ (g) + 6H₂ O(l)

• A)7.5 kg
• B)2.7 g
• C)480 g
• D)3.0 kg
• E)16 g